Self-Propagating High-Temperature Synthesis of Si3N4-SiC Using Ferrosilicium and Shungite

Kryukova, Olga; Avramchik, A. N.

doi:10.1109/efre47760.2020.9242028

Cited by 4 publications

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“…Figure 1 presents the diffraction pattern of a product derived from green composition with x = 10. Since SHS reaction in the basic mixture (no Al) is known to yield β-Si 3 N 4 , ZrO 2 , Si 2 N 2 O, and α-Fe [11,12], the addition of Al is seen to markedly change product composition (see caption to Fig. 1).…”

Section: Resultsmentioning

confidence: 99%

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Combustion of Ferrosilicon–Zircon Mixtures in Nitrogen Gas: Impact of Aluminum Additives

Kryukova

Болгару

Avramchik

2021

Int. J Self-Propag. High-Temp. Synth.

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Products formed upon combustion of [40 FeSi + 30 FeSiN + 30 ZrSiO 4 (zircon)] + xAl (x = 1.0-10, all figures in wt %) mixtures in nitrogen gas under pressure were characterized by XRD and SEM, with special emphasis on the impact of aluminum additives. Nitrogen content of combustion products and burning velocity were measured as a function of Al content x, nitrogen pressure P and sample diameter ∅. Stable frontal combustion observed at x = 6%, P = 4 MPa, and ∅ = 35 mm was found to yield a product containing β-

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Section: Resultsmentioning

confidence: 99%

“…Another route to the synthesis of Si 3 N 4 composites was suggested in [11,12]: the nitriding of ferrosilicon (FeSi alloy) with natural oxide materials (zircon, ilmenite, shungite) via SHS reaction. In this way, Si 3 N 4 -ZrO 2 -Si 2 N 2 O-Fe powders can be fabricated without external power supply.…”

Section: Introductionmentioning

confidence: 99%